The Sepulveda Flood Control Basin, in the midst of the urban San Fernando Valley, occupies 2,031 acres owned by the United States Army Corps of Engineers (USACE). Most of the basin is within City Council District 6; about 75% of the acreage is leased by and under control of the Los Angeles City Department of Recreation and Parks. It hosts two golf courses, two man-made lakes, two ecologically sensitive Wildlife Areas, sports fields, open parkland, agricultural land, and the Tillman Water Reclamation Plant, in addition to the small portion retained by the USACE for flood control purposes. The Los Angeles River runs directly through the basin, as does the 101 Freeway.
